Improved door-bell



M. B.A0GDEN.

Door Ben. No. 4.31924. l Patemed- Aug. 23. 1864?.

im. 70m/@6W5 g@ @my 5%? @M M QAM UNITED' STATES MARSHALL B. OGDEN, 0F FOND DU LAC, WISCONSIN.

IMPROVED DOOR-BELL'.

Specification forming part of Letters Patent N0. l13,924, dated August 23, 1864.

To all whom it may concer/'m Beit known that I, MARSHALL B. OGDEN, ot' Fond du Lac, in the county of Fond du Lac, in the State of Wisconsin, have invented a new and useful Improvement in Gong Door- Bells; and I do hereby declare that the fol lowing is a full and exact description thereof, reference being had to the aceompanyin g drawings, and to the letters of reference marked thereon.

My invention consists in a peculiar construction and arrangement of gong door-bells.

In the accompanying drawings, Figure l represents a section through the gong, bedplate, and door-casing, showing also the hammer and devices for operating the same. Fig. 2 is a detached View of the hammer, showing also the motion of the hinged tail of the hammer.

In Fig. l, A represents a portion of the doorcasing to which the bed-plate B is attached.

A forked standard, C, is cast with the bedplate, and serves for mounting the gong D, which may be fastened by a screw passing through the center of the gong and entering the standard C. (In the drawings, one part of this standard C is cut away.) A short arm, E, supports thcx hammer-lever F, and has a projecting stop, e, to limit the motion of the lever. The hammer-lever is curved like the neck of a swan, and it is tilted forward by means of a coiled spring, G. A hinged piece, H, projects beyond the coiled spring so as to meet and catch the hook M when the doorknob is pulled, as shown in red lines. Thus the hammer is tilted, and the hinged piece H allows the hook M to return to its place without disturbing the hammer. When the hammer is thus tilted, the coiled spring G returns the hammer with a sudden stroke upon the gong D, and the coiled spring L returns the.

shank and knob to their places, as seen in black lines. The lnotion of the hinged piece H is shown in Fig. 2.

The door-knob and shank may be ofthe usual form, the shank being provided with the spring L and hook M.

In attaching the bell or gong the head ot' thehammer is turned upward,\vhile the hinged piece H hangs downward, so that this piece will fall to its place after being moved backward by the hook M in passing, as described.l

MARSHALL B. OGDEN.

Witnesses:

S. D. STANDFIELD, J onu W. GoREs. 

